Anyone ever consider switching up to 26x12-12 rear tires on their Lazers? They should physically fit just fine visually. There is no real clearance issues that I'm aware of. They are only 1.9" bigger in diameter (will make mower sit almost 1" taller). Problem with this would be the front casters.... The front caster arm must be level, and the caster itself must be level vertically as well. If you just raise the rear, the front caster geometry changes, and you no longer get 360 degrees of equal, true, flat rotation. This leads me to my next question....with a little massaging of the caster fork could one fit 15x6.00-6 tires in the forks. They are 1.5" bigger in diameter (3/4" bigger all around. The center caster shank passes through the caster fork and protrudes through the bottom. Could this be ground off a little to allow the larger tires to spin without interferance? I took a 3/4" diameter object (highlighter pen for instance) and moved it around the caster tire. The only place it will hit is where the shank protrudes through the fork. The newer Lazers use a thicker fork material, and I was wondering if there is more or less clearance here. Of course one could always weld new caster arm ends (bearing cup area) on and raise them about 3/4" higher on the caster arm. Any thoughts on this? Pros.... Faster top speeds Smoother ride Better flotation Higher ground clearance Cons.... Harder on hydro's? Slightly higher center of gravity. Slightly more work/$ Is there anyone out there with an XP/XS and a regular Lazer willing to do a little homework and swap the 26" tires over and report back their findings? Anyone with a '03 or newer (thicker caster forks) fullsize Lazer wish to do the 3/4" (highlighter marker) clearance test on the new caster forks?